The shards break into pieces about 30 seconds after you arrive. What you can do to prep for this is just before you and your teammates press the button go to both locations the meteorite land and place as many sentry guns as possible. Its always good practice for everyone to run different team support items. Having all four fully upgraded really makes a difference in those moments of chaos! Hope this helps you.

a good tactic is if u have a medic have them run circles with the rhino's following him through the city they will get trapped on corners if u run around the chopper building and it keeps them off the team. helps if they have ferral or armor just in case. if u want a team mate should send me a message i can never find a decent team >.< - dustycrow333

Hmm i am usually very very busy but i might be able to slip you in today and show you how to pass it properly send me a message on xbox ( Angel 0f terr0r) the 0s are numbers. Say who you are because i get so many messages and friend requests daily that i cant keep up thanks.

hahaha na im not like that at all but i really am busy and get tonnes of messages dude to be honest i dont even read them because i play the game to much lol no joke within 10 mins ill recieve 1-5 messages

what we do, is before setting off the nuke, go back and everyone with sentries(they should be maked out fairly quickly), put one before the van at the heli first hive (iits not blocked until the nuke goes off), then up another sentry facing up the slope at the second heli hive, and focus on killing the rhinos asap, as soon as the rhinos are down, everything else goes until the next section, if you get enough sentries out its very easy, also if you have riot shields you can hold the rhinos infront of the sentries making it even quicker.